In Gaster's Sanctuary.
Gaster: For this great marriage today, the heavens do please give your blessing so that no unfortunate acts fall between these two who love more than any other.
Frisk: For any act that does occur, shall be remedied by one look at her most beautiful face. Gaster when the time comes please join us in the ceremony to bond us together forever more. What happens afterward, and so be it death if it may, being able to call her my wife is all that I wish.
Gaster: Rash love and joy can burn with the intensity of thermite, and explode into emptiness. Such that the components of such a reaction once met like a kiss, provoke the reaction into oblivion.
Frisk: Then let it be joyful, and let our passion burn like a mighty bonfire for all to see. It will be a guiding light that will also unite our two groups into one.
Gaster: The potential is great as you say, however for an outcome favorable to all, you let love mature like a plant giving it time, and space from time to time. Give the plant all the water it will ever need in one moment and it will drown; give it all the light it will need and it will burn.
Frisk: Love cannot be compared so something as simple as a plant.
Gaster: Can it not? Love is simply the intense relationship between two people if you were to simplify that to its roots, plants are delicate and intricate, as is love.
Chara enters the room and embraces Frisk in a rush.
Gaster: And here comes the other welcome guest to be married.
Chara: Thank you, Gaster, for this evening's pleasure in marriage.
Gaster: I can not be the one to thank for I was not the one who had thought of the marriage, nor the one who had asked you to be married in the first place. Please, give that honor to the man you love, as I'm aware he will give equal thanks to us both.
Chara: I'll give as much thanks as he does, for I am the one who agreed to the proposal.
Frisk: You truly must be as happy as I am. What is it that you think of us after our bonded love.
Chara: My words to describe my thoughts are uncountable. Those who wish to attempt it, also wish to break the barrier binding us down here. As they are unwise fools to do so. My love for you has made it impossible for me to gauge the words I have for you in this night alone.
Frisk: Indeed, for I am the same, at a loss of words when I have so many to share with you.
Gaster: This job must be done with great haste. Follow my steps as we enter the room in which you two will be united as one pair. You two are not to be left alone until the job is done.
The two follow Gaster into the room and proceed to be wed. They spend the rest of the day and night together.
Vows exchanged, and Gaster's warning dire.
For will these two who have been bonded by ultimate love, die in great fire?
Love has been given, and what is given must be taken. And those who hear word of this, will they be complying?
This love, bound within a night, shall be torn apart, by those who are Undying.